[linux-dvb] Re: DVB-C status [was:DVB-C in Helsinki]

[Juha Poutiainen <pode@iki.fi>]

On Tue, 13 May 2003, Johannes Stezenbach wrote:

> I wrote:
> > Stefan Norberg wrote:
> > > I can confirm that the same is true for DVB-C in Sweden.
> > > No tuning without the patch. Please include it in the CVS.
> >
> > I plan to look into it, but current CVS works fine here in Berlin.
> > If you patch doesn't break it for Berlin, I will apply it.
>
> OK, I tested with a Siemens DVB-C Rev.1.5, and it worked flawless for
> Berlin cable. So I committed Jaakko's patch.
>
> But according to Holger there are some problems:
> - some DVB-C cards might not work without the zig-zag scan
> - the IF 35937500 Hz might be wrong for other VES1820 based DVB-C
>   cards; it might be necessary to probe for the PLL used on the card
>
> If people report that Hauppauge DVB-C cards are broken with
> this patch, I might have to revert it...
>
I did some testing in Tampere(Finland) area, with Hauppauge DVB-C card.
I still get proglems with tuning with latest cvs. Also did some testing
with older drivers and here are the results as a table, I hope you can
descramble it :)

X == yes,  - == no
                                Can tune YLE
                                |  Can tune MTV3
                                | /  Audio sync OK with VDR (1.1.26)
                                | | /
driver version                  | | |
------------------------------+-+-+-+
dvb-1.0.0-pre2                | X X -
CVS 'now'                     | X - X
CVS yesterday                 | X - -
CVS yesterday + dvb6.diff (1) | X - -
CVS 13.04.2003                | X - -
CVS 13.04.2003 + dvb6.diff (1)| X - -
CVS 13.03.2003                | X - -
CVS 13.03.2003 + dvb6.diff (1)| X - -
CVS 13.02.2003                | X - -
CVS 13.02.2003 + dvb6.diff (2)| X X -
CVS 13.01.2003                | X - X
CVS 13.01.2003 + dvb6.diff (2)| X X X


(1) -- that seems to be there already
  patching file frontends/ves1820.c
  Hunk #1 FAILED at 180.

(2)
  Hunk #2 succeeded at 953 (offset 3 lines).

YLE channel (ofcourse all other in this MUX does the same):
  YLE 1:418:M64:C:6900:512:650:2321:0:17:0:0:0

MTV3 channel (all in this and 'nelonen' MUX's does the same):
  MTV3:426:M128:C:6900:305:561:817:0:49:0:0:0
  Nelonen:138:M128:C:6900:512:650:576:0:65:0:0:0


And when it doesn't tune, a process kdvb-fe-0:0 just keeps eating ~65%
cputime, and no channel gets tuned.
I made the "CVS now" test last, so it should be quite recent.

Is there something else I should test?

--
pode



-- 
Info:
To unsubscribe send a mail to ecartis@linuxtv.org with "unsubscribe linux-dvb" as subject.